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Finding the Fourth Proportional to 553,726.80, 830,590.20 and 483,742.80

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Solution

The fourth proportional to 553,726.80, 830,590.20 and 483,742.80 is: 725,614.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,726.80 : 830,590.20 = 483,742.80 : x
  2. Step 2: Convert to fraction form
    553,726.80/830,590.20 = 483,742.80/x
  3. Step 3: Cross multiply
    553,726.80x = 830,590.20 × 483,742.80
  4. Step 4: Simplify right side
    553,726.80x = 401,792,029,000.56
  5. Step 5: Solve for x
    x = 401,792,029,000.56/553,726.80
  6. Step 6: Final answer
    x = 725,614.20

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.